pub struct Counter<T>(_);
Expand description

An instrument that records increasing values.

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impl<T> Counter<T>

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pub fn new(inner: Arc<dyn SyncCounter<T> + Send + Sync>) -> Self

Create a new counter.

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pub fn add(&self, cx: &Context, value: T, attributes: &[KeyValue])

Records an increment to the counter.

Trait Implementations§

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impl<T: Clone> Clone for Counter<T>

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fn clone(&self) -> Counter<T>

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T> Debug for Counter<T>where T: Debug,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl TryFrom<InstrumentBuilder<'_, Counter<f64>>> for Counter<f64>

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type Error = MetricsError

The type returned in the event of a conversion error.
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fn try_from( builder: InstrumentBuilder<'_, Counter<f64>> ) -> Result<Self, Self::Error>

Performs the conversion.
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impl TryFrom<InstrumentBuilder<'_, Counter<u64>>> for Counter<u64>

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type Error = MetricsError

The type returned in the event of a conversion error.
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fn try_from( builder: InstrumentBuilder<'_, Counter<u64>> ) -> Result<Self, Self::Error>

Performs the conversion.

Auto Trait Implementations§

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impl<T> !RefUnwindSafe for Counter<T>

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impl<T> Send for Counter<T>

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impl<T> Sync for Counter<T>

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impl<T> Unpin for Counter<T>

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impl<T> !UnwindSafe for Counter<T>

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.